Vertical distribution and dietary preferences of deep-sea copepods (Euchaetidae and Aetideidae; Calanoida) in the vicinity of the Antarctic Polar Front
Four Paraeuchaeta species and three aetideids were frequently encountered along 51°30′S in the Atlantic sector of the Southern Ocean. Paraeuchaeta antarctica was most abundant close to the Antarctic Polar Front. Within the genera Paraeuchaeta and Gaetanus, congeners usually partitioned the water col...
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ftoceanrep:oai:oceanrep.geomar.de:1391 2023-05-15T14:10:15+02:00 Vertical distribution and dietary preferences of deep-sea copepods (Euchaetidae and Aetideidae; Calanoida) in the vicinity of the Antarctic Polar Front Laakmann, S. Stumpp, Meike Auel, H. 2009 text https://oceanrep.geomar.de/id/eprint/1391/ https://oceanrep.geomar.de/id/eprint/1391/1/Laakmann2009_Article_VerticalDistributionAndDietary.pdf https://doi.org/10.1007/s00300-008-0573-2 en eng Springer https://oceanrep.geomar.de/id/eprint/1391/1/Laakmann2009_Article_VerticalDistributionAndDietary.pdf Laakmann, S., Stumpp, M. and Auel, H. (2009) Vertical distribution and dietary preferences of deep-sea copepods (Euchaetidae and Aetideidae; Calanoida) in the vicinity of the Antarctic Polar Front. Polar Biology, 32 . pp. 679-689. DOI 10.1007/s00300-008-0573-2 <https://doi.org/10.1007/s00300-008-0573-2>. doi:10.1007/s00300-008-0573-2 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2009 ftoceanrep https://doi.org/10.1007/s00300-008-0573-2 2023-04-07T14:43:52Z Four Paraeuchaeta species and three aetideids were frequently encountered along 51°30′S in the Atlantic sector of the Southern Ocean. Paraeuchaeta antarctica was most abundant close to the Antarctic Polar Front. Within the genera Paraeuchaeta and Gaetanus, congeners usually partitioned the water column. Euchaetidae had high lipid (≤37% dry mass, DM in adult females) and wax ester contents (≤22% DM). Fatty acid composition of Paraeuchaeta spp. was dominated by monounsaturated moieties, especially 16:1(n-7) and 18:1(n-9), while fatty alcohols were mainly saturated. Surprisingly, only the bathypelagic P. barbata contained moderate amounts of 20:1(n-9) and 22:1(n-11) fatty acids (≤14%) and high levels of the respective fatty alcohols (≤50%), generally considered trophic biomarkers for calanid copepods as prey. Thus, herbivorous calanid copepods seem to be a readily available prey source at bathypelagic depths, indicating that their seasonal vertical migration provides a “trophic shortcut” from primary production at the surface to the interior of the ocean. Aetideidae also contained substantial levels of total lipid (14–36% DM), but wax esters contributed only up to 12% DM in copepodite stages C5 of Gaetanus spp., whereas other stages of Gaetanus and Aetideopsis minor only contained ≤6% DM of wax esters. The fatty acid compositions of Aetideidae were more balanced with 16:0, 18:1(n-9), 20:5(n-3), and 22:6(n-3) as important components, indicating a generally omnivorous feeding behaviour. Article in Journal/Newspaper Antarc* Antarctic Antarctica Polar Biology Southern Ocean Copepods OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Antarctic Southern Ocean The Antarctic Polar Biology 32 5 679 689 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Four Paraeuchaeta species and three aetideids were frequently encountered along 51°30′S in the Atlantic sector of the Southern Ocean. Paraeuchaeta antarctica was most abundant close to the Antarctic Polar Front. Within the genera Paraeuchaeta and Gaetanus, congeners usually partitioned the water column. Euchaetidae had high lipid (≤37% dry mass, DM in adult females) and wax ester contents (≤22% DM). Fatty acid composition of Paraeuchaeta spp. was dominated by monounsaturated moieties, especially 16:1(n-7) and 18:1(n-9), while fatty alcohols were mainly saturated. Surprisingly, only the bathypelagic P. barbata contained moderate amounts of 20:1(n-9) and 22:1(n-11) fatty acids (≤14%) and high levels of the respective fatty alcohols (≤50%), generally considered trophic biomarkers for calanid copepods as prey. Thus, herbivorous calanid copepods seem to be a readily available prey source at bathypelagic depths, indicating that their seasonal vertical migration provides a “trophic shortcut” from primary production at the surface to the interior of the ocean. Aetideidae also contained substantial levels of total lipid (14–36% DM), but wax esters contributed only up to 12% DM in copepodite stages C5 of Gaetanus spp., whereas other stages of Gaetanus and Aetideopsis minor only contained ≤6% DM of wax esters. The fatty acid compositions of Aetideidae were more balanced with 16:0, 18:1(n-9), 20:5(n-3), and 22:6(n-3) as important components, indicating a generally omnivorous feeding behaviour. |
format |
Article in Journal/Newspaper |
author |
Laakmann, S. Stumpp, Meike Auel, H. |
spellingShingle |
Laakmann, S. Stumpp, Meike Auel, H. Vertical distribution and dietary preferences of deep-sea copepods (Euchaetidae and Aetideidae; Calanoida) in the vicinity of the Antarctic Polar Front |
author_facet |
Laakmann, S. Stumpp, Meike Auel, H. |
author_sort |
Laakmann, S. |
title |
Vertical distribution and dietary preferences of deep-sea copepods (Euchaetidae and Aetideidae; Calanoida) in the vicinity of the Antarctic Polar Front |
title_short |
Vertical distribution and dietary preferences of deep-sea copepods (Euchaetidae and Aetideidae; Calanoida) in the vicinity of the Antarctic Polar Front |
title_full |
Vertical distribution and dietary preferences of deep-sea copepods (Euchaetidae and Aetideidae; Calanoida) in the vicinity of the Antarctic Polar Front |
title_fullStr |
Vertical distribution and dietary preferences of deep-sea copepods (Euchaetidae and Aetideidae; Calanoida) in the vicinity of the Antarctic Polar Front |
title_full_unstemmed |
Vertical distribution and dietary preferences of deep-sea copepods (Euchaetidae and Aetideidae; Calanoida) in the vicinity of the Antarctic Polar Front |
title_sort |
vertical distribution and dietary preferences of deep-sea copepods (euchaetidae and aetideidae; calanoida) in the vicinity of the antarctic polar front |
publisher |
Springer |
publishDate |
2009 |
url |
https://oceanrep.geomar.de/id/eprint/1391/ https://oceanrep.geomar.de/id/eprint/1391/1/Laakmann2009_Article_VerticalDistributionAndDietary.pdf https://doi.org/10.1007/s00300-008-0573-2 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctica Polar Biology Southern Ocean Copepods |
genre_facet |
Antarc* Antarctic Antarctica Polar Biology Southern Ocean Copepods |
op_relation |
https://oceanrep.geomar.de/id/eprint/1391/1/Laakmann2009_Article_VerticalDistributionAndDietary.pdf Laakmann, S., Stumpp, M. and Auel, H. (2009) Vertical distribution and dietary preferences of deep-sea copepods (Euchaetidae and Aetideidae; Calanoida) in the vicinity of the Antarctic Polar Front. Polar Biology, 32 . pp. 679-689. DOI 10.1007/s00300-008-0573-2 <https://doi.org/10.1007/s00300-008-0573-2>. doi:10.1007/s00300-008-0573-2 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s00300-008-0573-2 |
container_title |
Polar Biology |
container_volume |
32 |
container_issue |
5 |
container_start_page |
679 |
op_container_end_page |
689 |
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1766282298828783616 |